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MC34701EK Datasheet

  • MC34701EK

  • Freescale Semiconductor, Inc [1.5 A Switch-Mode Power Suppl...

  • FREESCALE

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DYNAMIC ELECTRICAL CHARACTERISTICS
DYNAMIC ELECTRICAL CHARACTERISTICS
Table 4. DYNAMIC ELECTRICAL CHARACTERISTICS
Characteristics noted under conditions -40擄C
鈮?/div>
T
A
鈮?/div>
85擄C unless otherwise noted. Input voltages VIN1 = VIN2 = 3.3 V using
the typical application circuit (see
Figures 33)
unless otherwise noted.
Characteristic
Buck Converter
Duty Cycle Range (Normal Operation)
(17)
Switching Node SW Rise Time
(17)
VIN = 5.0 V, ILOAD = 1.0 A
Switching Node SW Fall Time
(17)
VIN = 5.0 V, ILOAD = 1.0 A
Maximum Deadtime
(17)
Buck Control Loop Propagation Delay
(17)
VINV < 0.8 V to VSW > 90% of High Level or VINV > 0.8 V to VSW < 10%
of Low Level
Soft Start Duration (Power Sequencing Disabled, EN1 = 1, EN2 = 1)
(17)
Fault Condition Time-Out
(17)
Retry Timer Cycle
(17)
Oscillator
Oscillator Center Frequency
(19)
RF = 11.3 k鈩?/div>
Oscillator Frequency Range
Oscillator Frequency Adjusting Resistor Range
Oscillator Frequency Adjustment
(18), (19)
RF = 7.0 k鈩?/div>
Oscillator Frequency Adjustment
(18), (19)
RF = 22 k鈩?/div>
Oscillator Default Frequency (Switching Frequency), FREQ Terminal Open
Oscillator Output Signal Duty Cycle (Square Wave, 180擄 Out-of-Phase with
the Internal Suitable Oscillator)
Synchronization Pulse Minimum Duration
(17)
Notes
17. Design information only. This parameter is not production tested.
18. see Figure 4 for more details
19. RF is RFREQ
f
OSC
D
OSC
t
SYNC
f
OSC
鈥?/div>
鈥?/div>
40
1.0
鈥?/div>
300
50
鈥?/div>
200
鈥?/div>
60
鈥?/div>
碌s
kHz
%
f
OSC
R
FREQ
f
OSC
400
鈥?/div>
鈥?/div>
kHz
200
7.0
鈥?/div>
鈥?/div>
400
22
kHz
k鈩?/div>
kHz
f
OSC
270
300
330
kHz
t
SS
t
FAULT
t
RET
t
D
t
PD
鈥?/div>
200
7.0
70
50
350
10
100
鈥?/div>
800
15
150
碌s
ms
ms
t
FALL
鈥?/div>
鈥?/div>
17
35
鈥?/div>
鈥?/div>
ns
ns
t
D
t
RISE
鈥?/div>
7.0
鈥?/div>
ns
0
鈥?/div>
95
%
ns
Symbol
Min
Typ
Max
Unit
34701
Analog Integrated Circuit Device Data
Freescale Semiconductor
11

MC34701EK 產(chǎn)品屬性

  • 42

  • 集成電路 (IC)

  • PMIC - 穩(wěn)壓器 - 專用型

  • -

  • 轉(zhuǎn)換器，F(xiàn)reescale 電源 QUICC? I，II

  • 2.8 V ~ 6 V

  • 1

  • 可調(diào)

  • -40°C ~ 85°C

  • 表面貼裝

  • 32-SOIC（0.295"，7.50mm 寬）

  • 32-SOIC

  • 管件

  • KIT33701DWBEVB-ND - KIT FOR 33701 POWER SUPPLY

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